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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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import javax.sound.sampled.AudioFormat;

import javax.sound.sampled.AudioSystem;

import javax.sound.sampled.DataLine;

import javax.sound.sampled.Line;

import javax.sound.sampled.LineUnavailableException;

import javax.sound.sampled.SourceDataLine;

import javax.sound.sampled.TargetDataLine;

/**

 * @test

 * @bug 4991672

 * @summary disabled assertion at maximum thread priority causes audio crash

 * @run main/timeout=600 DisabledAssertionCrash

 */

public class DisabledAssertionCrash {

    private static final int bufferSize = 1024;

    public static void main(String[] args) {

        System.out.println("This program hangs if priority is set,");

        System.out.println("and assertion is in the code.");

        System.out.println("The program crashes the entire Windows system");

        System.out.println("if assertions are disabled.");

        try {

            Thread.currentThread().setPriority(Thread.MAX_PRIORITY);

            AudioFormat audioFormat = new AudioFormat(44100,16,1,true,true);

            Line.Info sourceDataLineInfo = new DataLine.Info(SourceDataLine.class,audioFormat);

            SourceDataLine sourceDataLine =

            (SourceDataLine) AudioSystem.getLine(sourceDataLineInfo);

            System.out.println("SourceDataLine: "+sourceDataLine);

            sourceDataLine.open(audioFormat, bufferSize);

            sourceDataLine.start();

            Line.Info targetDataLineInfo =

            new DataLine.Info(TargetDataLine.class,audioFormat);

            TargetDataLine targetDataLine =

            (TargetDataLine) AudioSystem.getLine(targetDataLineInfo);

            System.out.println("TargetDataLine: "+targetDataLine);

            targetDataLine.open(audioFormat, bufferSize);

            targetDataLine.start();

            byte[] data = new byte[bufferSize];

            // execute for 20 seconds

            float bufferTime = (((float) data.length) / audioFormat.getFrameSize()) / audioFormat.getFrameRate();

            int count = (int) (20.0f / bufferTime);

            System.out.println("Buffer time: "+(bufferTime * 1000)+" millis. "+count+" iterations.");

            for (int i = 0; i < count; i++) {

                int cnt = targetDataLine.read(data,0,data.length);

                sourceDataLine.write(data,0,cnt);

                assert cnt == data.length;

            }

            System.out.println("Successfully recorded/played "+count+" buffers. Passed");

        } catch(LineUnavailableException lue) {

            System.out.println("Audio hardware is not available!");

            lue.printStackTrace();

            System.out.println("Cannot execute test. NOT failed.");

        } catch(IllegalArgumentException iae) {

            System.out.println("No audio hardware is installed!");

            iae.printStackTrace();

            System.out.println("Test system not correctly setup.");

            System.out.println("Cannot execute test. NOT failed.");

        } catch(Exception e) {

            System.out.println("Unexpected Exception: "+e);

            e.printStackTrace();

            System.out.println("Cannot execute test. NOT failed.");

        }

    }

}